/*---------------------------------------------------------------------------------------------
 *  Copyright (c) Microsoft Corporation. All rights reserved.
 *  Licensed under the MIT License. See License.txt in the project root for license information.
 *--------------------------------------------------------------------------------------------*/
'use strict';
export var conf = {
    comments: {
        blockComment: ['<!--', '-->',]
    },
    brackets: [
        ['{', '}'],
        ['[', ']'],
        ['(', ')']
    ],
    autoClosingPairs: [
        { open: '{', close: '}' },
        { open: '[', close: ']' },
        { open: '(', close: ')' },
        { open: '<', close: '>', notIn: ['string'] }
    ],
    surroundingPairs: [
        { open: '(', close: ')' },
        { open: '[', close: ']' },
        { open: '`', close: '`' },
    ],
    folding: {
        markers: {
            start: new RegExp("^\\s*<!--\\s*#?region\\b.*-->"),
            end: new RegExp("^\\s*<!--\\s*#?endregion\\b.*-->")
        }
    }
};
export var language = {
    defaultToken: '',
    tokenPostfix: '.md',
    // escape codes
    control: /[\\`*_\[\]{}()#+\-\.!]/,
    noncontrol: /[^\\`*_\[\]{}()#+\-\.!]/,
    escapes: /\\(?:@control)/,
    // escape codes for javascript/CSS strings
    jsescapes: /\\(?:[btnfr\\"']|[0-7][0-7]?|[0-3][0-7]{2})/,
    // non matched elements
    empty: [
        'area', 'base', 'basefont', 'br', 'col', 'frame',
        'hr', 'img', 'input', 'isindex', 'link', 'meta', 'param'
    ],
    tokenizer: {
        root: [
            // headers (with #)
            [/^(\s{0,3})(#+)((?:[^\\#]|@escapes)+)((?:#+)?)/, ['white', 'keyword', 'keyword', 'keyword']],
            // headers (with =)
            [/^\s*(=+|\-+)\s*$/, 'keyword'],
            // headers (with ***)
            [/^\s*((\*[ ]?)+)\s*$/, 'meta.separator'],
            // quote
            [/^\s*>+/, 'comment'],
            // list (starting with * or number)
            [/^\s*([\*\-+:]|\d+\.)\s/, 'keyword'],
            // code block (4 spaces indent)
            [/^(\t|[ ]{4})[^ ].*$/, 'string'],
            // code block (3 tilde)
            [/^\s*~~~\s*((?:\w|[\/\-#])+)?\s*$/, { token: 'string', next: '@codeblock' }],
            // github style code blocks (with backticks and language)
            [/^\s*```\s*((?:\w|[\/\-#])+).*$/, { token: 'string', next: '@codeblockgh', nextEmbedded: '$1' }],
            // github style code blocks (with backticks but no language)
            [/^\s*```\s*$/, { token: 'string', next: '@codeblock' }],
            // markup within lines
            { include: '@linecontent' },
        ],
        codeblock: [
            [/^\s*~~~\s*$/, { token: 'string', next: '@pop' }],
            [/^\s*```\s*$/, { token: 'string', next: '@pop' }],
            [/.*$/, 'variable.source'],
        ],
        // github style code blocks
        codeblockgh: [
            [/```\s*$/, { token: 'variable.source', next: '@pop', nextEmbedded: '@pop' }],
            [/[^`]+/, 'variable.source'],
        ],
        linecontent: [
            // escapes
            [/&\w+;/, 'string.escape'],
            [/@escapes/, 'escape'],
            // various markup
            [/\b__([^\\_]|@escapes|_(?!_))+__\b/, 'strong'],
            [/\*\*([^\\*]|@escapes|\*(?!\*))+\*\*/, 'strong'],
            [/\b_[^_]+_\b/, 'emphasis'],
            [/\*([^\\*]|@escapes)+\*/, 'emphasis'],
            [/`([^\\`]|@escapes)+`/, 'variable'],
            // links
            [/\{+[^}]+\}+/, 'string.target'],
            [/(!?\[)((?:[^\]\\]|@escapes)*)(\]\([^\)]+\))/, ['string.link', '', 'string.link']],
            [/(!?\[)((?:[^\]\\]|@escapes)*)(\])/, 'string.link'],
            // or html
            { include: 'html' },
        ],
        // Note: it is tempting to rather switch to the real HTML mode instead of building our own here
        // but currently there is a limitation in Monarch that prevents us from doing it: The opening
        // '<' would start the HTML mode, however there is no way to jump 1 character back to let the
        // HTML mode also tokenize the opening angle bracket. Thus, even though we could jump to HTML,
        // we cannot correctly tokenize it in that mode yet.
        html: [
            // html tags
            [/<(\w+)\/>/, 'tag'],
            [/<(\w+)/, {
                    cases: {
                        '@empty': { token: 'tag', next: '@tag.$1' },
                        '@default': { token: 'tag', next: '@tag.$1' }
                    }
                }],
            [/<\/(\w+)\s*>/, { token: 'tag' }],
            [/<!--/, 'comment', '@comment']
        ],
        comment: [
            [/[^<\-]+/, 'comment.content'],
            [/-->/, 'comment', '@pop'],
            [/<!--/, 'comment.content.invalid'],
            [/[<\-]/, 'comment.content']
        ],
        // Almost full HTML tag matching, complete with embedded scripts & styles
        tag: [
            [/[ \t\r\n]+/, 'white'],
            [/(type)(\s*=\s*)(")([^"]+)(")/, ['attribute.name.html', 'delimiter.html', 'string.html',
                    { token: 'string.html', switchTo: '@tag.$S2.$4' },
                    'string.html']],
            [/(type)(\s*=\s*)(')([^']+)(')/, ['attribute.name.html', 'delimiter.html', 'string.html',
                    { token: 'string.html', switchTo: '@tag.$S2.$4' },
                    'string.html']],
            [/(\w+)(\s*=\s*)("[^"]*"|'[^']*')/, ['attribute.name.html', 'delimiter.html', 'string.html']],
            [/\w+/, 'attribute.name.html'],
            [/\/>/, 'tag', '@pop'],
            [/>/, {
                    cases: {
                        '$S2==style': { token: 'tag', switchTo: 'embeddedStyle', nextEmbedded: 'text/css' },
                        '$S2==script': {
                            cases: {
                                '$S3': { token: 'tag', switchTo: 'embeddedScript', nextEmbedded: '$S3' },
                                '@default': { token: 'tag', switchTo: 'embeddedScript', nextEmbedded: 'text/javascript' }
                            }
                        },
                        '@default': { token: 'tag', next: '@pop' }
                    }
                }],
        ],
        embeddedStyle: [
            [/[^<]+/, ''],
            [/<\/style\s*>/, { token: '@rematch', next: '@pop', nextEmbedded: '@pop' }],
            [/</, '']
        ],
        embeddedScript: [
            [/[^<]+/, ''],
            [/<\/script\s*>/, { token: '@rematch', next: '@pop', nextEmbedded: '@pop' }],
            [/</, '']
        ],
    }
};